This document discusses CommonJS and JavaScript modules. It describes how CommonJS aims to standardize module definitions for JavaScript using require and exports. It also covers other module approaches like ES5 Simple Modules, RequireJS, and OzJS. OzJS is a lightweight module loader that works with the TUICompiler, which is a Python-based compiler for preprocessing and compiling modules.
The document provides an overview of Git, including its history and why it was created. Some key points:
- Git was created by Linus Torvalds in 2005 to be a DVCS for Linux kernel development after being dissatisfied with other options.
- It was written from scratch in just 5 days and has since become very popular due to its distributed nature, speed, flexibility and other advantages over centralized systems like SVN.
- Internally, Git treats files, directories, and snapshots of the file system as objects and commits as pointers to trees and parents. This allows for efficient version control and retrieval of history.
This document discusses the Model-View-Controller (MVC) pattern and how to implement it for web applications. Some key points discussed include:
1. Using small JavaScript modules and message passing between components to implement MVC.
2. Using an observer pattern to notify views when models change and controllers when user events occur.
3. Implementing a URL router to handle application URLs and navigation.
4. Having views delegate user interface handling to separate UI components.
The document discusses various topics related to web front-end performance optimization. It begins with an overview of what happens from entering a URL to a browser receiving and rendering a page. It then covers specific topics like bandwidth and latency, network protocols like DNS, TCP/IP, HTTP/1.1, caching, and how data is rendered by the browser through HTML, CSS, and JavaScript. Specific techniques are provided for optimizing aspects like reducing DNS lookups, HTTP requests, content size, and avoiding things that hurt JavaScript engine optimization.